// Copyright 2019 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Flags: --allow-natives-syntax let speciesCounter = 0; Object.defineProperty(Promise, Symbol.species, { value: function(...args) { speciesCounter++; return new Promise(...args); } }); async function foo() { } assertPromiseResult(Promise.all([foo()]), () => { assertEquals(3, speciesCounter); });